I’ve updated packages through yay before and for a long while I had a problem installing one particular package. I believe a few weeks maybe months now.
Within the last week it as now affected three packages in the AUR for me and all refuse to install.
At first it was micromamba, now cogl and clutter-gtk are affected.
I have tried installing all using yay or manually using git and makepkg.
All three seem to give the error of
ModuleNotFoundError: No module named 'giscanner._giscanner'
I found some people having similar problems and suggested deactivating conda and trying to install, but I still run into the same issue.
I have also seen a suggestion in running the command g-ir-scanner by itself and should be seeing the error ERROR: Need at least one filename
However I also run into the aforementioned ModuleNotFoundError.
My guess is that perhaps my conda or python installation maybe at fault.
Python version installed 3.10.13
Conda version install 25.11.1
Perhaps of important note, I have ComfyUI installed on my system.
So a casual question about Arch, in a KDE forum, with no system information - perhaps another CachyOS user?
The first package you mention is micromamba which is an AUR package - so this is not even supported by Arch…
So why is this a KDE issue?
➤ aur micromamba
📦 Name: micromamba
🌐 Upstream URL: https://github.com/mamba-org/mamba
👍 Votes: 10
📈 Popularity: 0.50
🧩 Version: 2.5.0-2
💾 Size: 0 B
📝 Description: The fast cross-platform package manager
📅 First Submitted: 2021-03-21 15:23:27 (UTC)
🕒 Last Updated: 2026-01-10 17:32:48 (UTC)
🔗 Link: https://aur.archlinux.org/packages/micromamba
Perhaps you should try micromamba-bin instead.
Understanding that a package comes from AUR is a very fundamental skill required for running any kind of Arch based distribution - as is being capable of searching the AUR - you might notice there’s a link in the information about the package.
Following that link leads you to the AUR page with comments that it was failing to build in January 2026, which might be relevant.
It isn’t a subject for Arch or KDE support or help.
My apologies, maybe should have posted this in the EndeavourOS forums.
I have yet to try installing micromamba-bin or variations of other packages.
Be careful with asking questions about the AUR on any forum. The AUR is a nice thing and very useful in many cases but it’s packages are completely unsupported by any distribution, even Arch itself. Also, you are mostly on your own when you are using the AUR on any Arch-based distribution (like EndeavourOS). The AUR relies on packages in the main Arch repos and packages may break on distributions like yours because they might ship outdated packages in their own repos.
The sad truth is, you have to contact the package maintainer of micromamba if you have issues. And even worse, they might not be interested in helping you because you aren’t on Arch after all…
I would suggest you try to help yourself:
Try to install the AUR package manually - which is the recommended way. There are a lot of resources about that, e.g. on the Arch Wiki: Arch User Repository - ArchWiki
If I was going to install micromamba on my system, I would to the following:
- Open the package on the AUR: AUR (en) - micromamba
- Clone the repo locally
- Investigate the package, e.g. read the PKGBUILD
Here, the wiki link above is helpful). You especially have to carefully make sure there isn’t anything fishy going on. If you fancy a YT video about this: https://www.youtube.com/watch?v=bTKATeeQlvM. Only continue if you are sure what the PKGBUILD does. Remember, it is executing shell commands as ROOT on your system!
- Install the build dependencies (again, the wiki is helpful here)
- Build the package
- Install the package
You could do steps 4 to 6 all at once, again have a look at the wiki for this. But for your case, don’t as it won’t be as verbose for your debugging needs. Feel free to contact me by PM in this case about any issues you’re running into.
2 Likes
I appreciate your reply and offer.
I asked the same question in the EndeavourOS forums and it looks like I’ve got some odd behaviour coming from conda or micromamba that is currently installed that might be causing issues with my python install.
Not sure if that’s what you’d want to work through in DMs. 
As I mentioned earlier, I got help form the people in EndeavourOS. It seems to have been above some of the expertise or not worth the hassle of finding the quirk with my installation of conda and micromamba. I opted to reinstall my OS.